The citation and additional information for this publication is listed below.
If there are links available to download data, click on the link to retrieve the file.
If you would like to order this publication, click the "Add to cart" link.

This is an open-file publication. MBMG open files are manuscripts and maps that are
released, but not considered formal publications; most have not gone through the
rigorous review and editorial process required for an official report. Some
open-file reports eventually appear as formal Bureau publications.